16
LP-374 REV. 3.25.14
2. Diagnostic Function
To query appliance diagnostics, press and hold the ENTER and UP buttons together for one second. After opening the Diagnostic
Function, use the UP and DOWN arrows to scroll through the diagnostics.
DISPLAY CODE (2)
DESCRIPTION
VALUE (1)
2
Actual Temperature
T2, Water Tank Temperature
31
Actual Temperature
T3a, Evaporator Inlet Temperature
32
Actual Temperature
T3b, Evaporator Outlet Temperature
4
Actual Temperature
T4, Compressor Discharge Temperature
5
Actual Temperature
T5, Ambient Temperature
6
Actual Current
Current Value
7
Malfunction Protection Code
The most recent error
8
Malfunction Protection Code
Second most recent error
9
Malfunction Protection Code
Third most recent error
A
Fan Motor Operating Time 1
Actual operating time = Fan motor operating time 1 + Fan motor
operating time 2
b
Fan Motor Operating Time 2
C
Heat Pump Protection Counter
Heat pump protection counter
Table 4
– Diagnostic Function List – See Screen Shot in Figure 13 for location of Value (1) and Display Code (2)
To exit appliance diagnostics, press and hold the ENTER and UP buttons together for one second; otherwise, the appliance will exit
automatically after one minute of no activity.
Figure 13
– Diagnostic Function Screen Shot
3. Clear Malfunction
To clear malfunction, press and hold ENTER and DOWN simultaneously for one second.
4. Clear Alarm
To clear alarm, press and hold ENTER and VACATION simultaneously for one
second.
G. DEMAND RESPONSE
This water heater is compatible with the optional Demand Response (DR) module
(purchased separately). Contact your local utility to see if your area is using DR
technology.
INSTALLATION
The DR module is equipped with magnets in the base of the module that enable it
to attach to the painted metal exterior of the water heater. Details on how to
connect the cables can be found in instructions included with the module.
Once the cable from the DR module is plugged into the water heater connection,
follow the power-up directions included with the module. As soon as the DR
module is operating, the water heater is ready to receive DR signals.
QUICK GUIDE
If your local utility company utilizes DR technology, the DR module will receive
signals from the utility company. One of four signals will be sent:
Low
represents
that the lowest energy cost rate is available.
Medium
and
High
signals represent
increasing energy cost steps, and the
Critical
signal represents “peak rate” energy.
Figure 14
– Demand Response Installation
